Adobe Acrobat XI User Manual download pdf (Page 406)

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Electronic signatures

Last updated 1/14/2015

Compare versions of a signed document

After a document is signed, you can display a list of the changes made to the document after the last version.

1 In the Signatures panel, select the signature.

2 Choose Compare Signed Version To Current Version from the Option menu .

3 When you’re done, close the temporary document.

Trust a signer’s certificate

Trusting a certificate involves adding it to the user’s trusted identity list in the Trusted Identity Manager and manually

setting its trust level. End users often exchange certificates as needed when using certificate security. Alternatively, they

add certificates directly from signatures in signed documents and then set trust levels. However, enterprises often

require employees to validate the signatures of others without performing any manual task. Acrobat trusts all

certificates for signing and certifying that chain up to a trust anchor. Therefore, administrators should preconfigure

client installations or let their end users add a trust anchor or anchors. For more information on trusting certificates,

see

About certificate-based signatures.

PDF Portfolios and digital signatures

You can sign component PDFs within a PDF Portfolio, or sign the PDF Portfolio as a whole. Signing a component PDF

locks the PDF for editing and secures its content. After signing all the component PDFs, you can sign the entire PDF

Portfolio to finalize it. Alternatively, you can sign the PDF Portfolio as a whole to lock the content of all component

PDFs simultaneously.

• To sign a component PDF, see Signing PDFs with Adobe EchoSign Electronic Signature. The signed PDF is

automatically saved to the PDF Portfolio.

• To sign a PDF Portfolio as a whole, sign the cover sheet (View > Portfolio > Cover Sheet). Once you sign the PDF

Portfolio as a whole, you cannot add signatures to the component documents. However, you can add more

signatures to the cover sheet.

Digital signatures on attachments to component PDFs

You can add signatures to attachments before signing the cover sheet. To apply signatures to attached PDFs, open the

PDF in a separate window. Right-click the attachment, and choose Open File from the context menu. To view

signatures on the PDF Portfolio, navigate to the cover sheet to view the document message bar and signatures pane.

Signed and certified PDF Portfolios

A properly signed or certified PDF Portfolio has one or more signatures that approve or certify the PDF Portfolio. The

most significant signature appears in a Signature Badge in the toolbar. Details of all signatures appear in the cover sheet.

• To view the name of the organization or person that signed the PDF Portfolio, hover the pointer over the Signature

Badge.

• To view details about the signature that appears in the Signature Badge, click the Signature Badge. The cover sheet

and the Signatures pane on the left open with details.

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Adobe Acrobat XI User Manual Page 406